Believe it or not if you do have a issue with 1 cylinder you can see a difference more at idle then any other spot. Not sure with the temp gun but with egt probes you can see at idle for sure.use a lazer temp gun,... much easier.
but... at idle, you will not get accurate readings, do to poor distribution .
What is a balance test ? How do you do it ? I’ve never heard of it before . I’ve done plenty of leak down tests and compression tests but never a balance test .I did the balance test by disconnecting the IAC. And found a bad cracked spark plug.
Thanks Everyone,
Juan
The IAC is shut off. Each cylinder is killed one at a time and the rpm drop is written down. All cylinders should cause the same rpm loss. Weak cylinders show little or no loss of rpm.What is a balance test ? How do you do it ? I’ve never heard of it before . I’ve done plenty of leak down tests and compression tests but never a balance test .
Okay how are you shutting down each cylinder? Pulling spark plug wires,The IAC is shut off. Each cylinder is killed one at a time and the rpm drop is written down. All cylinders should cause the same rpm loss. Weak cylinders show little or no loss of rpm.
I myself try to pull injector plugs, but you can also pull the plug wires. Or You can also short the spark by sliding a test light into the joint where the spark plug boots go in the plug wire. Safer than just pulling the wire.Okay how are you shutting down each cylinder? Pulling spark plug wires,
The test is only going to last about five seconds won't come close to washing the cylinder walls down and they make long plug wire pliers that you can pop them on and off in a matter of seconds so there will be absolutely no chance of washing down the cylinder with fuelPulling plug wires is not something I am fond off because I don't get along with electricity. The injectors also keep firing and depending on how long the test lasts, or can wash down the walls and the ECU will over fuel the other 5.
Therefore, my prefered test is by disconnecting the injector(s). It's quick and easy, and I won't get shocked. Lol
I don't have the ECU-GN, but pretty sure from the video it has a build in feature to locate a lower performing cylinder.
I am confident you have less fear of getting shocked than I do. LolThe test is only going to last about five seconds won't come close to washing the cylinder walls down and they make long plug wire pliers that you can pop them on and off in a matter of seconds so there will be absolutely no chance of washing down the cylinder with fuel